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S. HIPKINS, jr. `Coral Boring-Machines.

Patented Jan. 14,1873.'

AM. PHoro-L/moGHAPH/c co. wwwa/mds masas; u

NTTEE STATES PATENT GFFICE,

STEPHEN HrPKrNs, JE., or WHEELING, wEsT vrEG1NIA,AssIGNoE or ONE- HALF His EIGHT To RALPH HEATHERINGTON, 0F sAME PLACE.

IMPROVEMENT iN COAL-EGRENG MACHINES.

Specification forming part of Letters Patent No. 34%,@041, dated January 14, 1873.

chines, of which the following is a specitica` tion:

My invention relates to that class of coal-` boring machines operated by hand; and my Asaid invention consists, iirst, in combining the movable frame and the gearing which it carries for operatin g the bit-stock with the screwsleeve and its parts carrying the bit-stock, when both are arranged to be moved in the same direction in diiferent planes upon and within a fixed frame, as hereinafter described;

second, in the arrangement and construction of themechanism for operating the bit-stock and the parts carrying the same, wherebytheymay be readily connected to and disconnected from each other, as will be more particularly hereinafter described; third, in the arrangement of the carrying-frame, the' bit-stock-carrying parts, and their slides, whereby the bit-stock may be moved upon the main frame in opposite directions and from the opposite ends of said carrying-frame to obtain the advantage of backand-forth cuts upon the same frame; fourth, in the feeding-tube for the bit-stock, constructed, connected, and carrying` the bit-stock in its compound movement; fifth, in the construction and arrangement of devices for feeding the bit-stock into and toward the wall; sixth, in the constructionand arrangement of devices for disconnecting the bit-stock from the feeding-tube without removing the connecting-sleeve from said tube or any of the other parts; seventh, in the construction and arrangement of the devices for connecting the feeding devices of the screw-tube with the operating parts of the machine; eighth, in the construction and arrangement of devices for raising and lowering the main frame ;r and, finally, in the lconstruction and relative arrangement of the operative parts of my improved machine, whereby an efcient and compact new coa-l-borer is produced. n ,y

In the accompanying drawing, Figure 1,

- Sheet 1, represents a side elevation of myimproved coal-boring machine; Fig. 2, Sheet 2,

represents a longitudinal vertical lsection of.v

the same, indicated by the dotted line, Fig. 3, and looking in the direction shown by the arrows; Fig. 2, Sheet 2, represents a longitudinal vertical section of the bit-stock-carrying parts with the extension'of the bit-stock; Fig. 3, Sheet 3,-represents a vertical crosssection of the machine at line :v w of Fig. 2; Fig. 4, Sheet 3, represents a longitudinal vertical section of the bit-stock-carrying parts; and Figs. 5, 6, and 7, Sheet 3, represent detached views of parts of the bit-stock.

rlhe main frame of my improved coal-boring machine consists of two end pieces, A B, connected to each other on each side by upper bars G and lower bars D, the lower edges of thebars-U and the upper edges of bars D being dovetailed, as shown in Fig. 3, to fit into dovetailed grooves E in the upper and lower Vfaces of Y slides E, one on each side, which slides E are provided with central circulaiside openings, and are connectedto each other by means of a tube, F, provided on its outersurface with a male-screw thread, and with longitudinal openings F', Fig. 6, at top and bottom. In the upper faces ofthe bars (l are formeddgrooves G1, Fig. 3, in which the lower edges of a frame, G, move freely forward and backward, the outer edge forming the groove on the face of bar C, at one side being'formed, for a suitable distance, into a rack, G2, Fig. 1, into which a cog-wheel, G', on the correspond'- `ing side of frame G gears. From bars El, at each of theuend pieces A B, and which bars carry at each end a wheel, H1,-rise standards H2, provided with serew-threads and a square top, which standards, passing through lugs A B on the end pieces of the fra-me, support the frame on the wheels, and thereby render it movable; andthelower ends of these standards revolving freely in the bars H, on which theyrest by means of shoulders, they will, when turned in one direction or the other, elevate or lower the framevertically, and thus serve to make the machine level. A shaft, 1has its bearings in thenpper bars of the frame G, and carries, at asuitable point between the sides of the' frame, a beveled cog-wheel, l1, gearing with a horizontal beveled cog-wheel, lz, on the upper` end of the shaft J of a y-wheel, J1, which: shaft J has suitable bearings in pieces'Jfse:

cured to the frame G.- On the inside of one end of the frame G, is keyed a cog-wheel, ,13, gearing with a cog-wheel, K1, on a shaft, K, which shaft has its bearings in the frame G and is revolved by means of a crank-handle which is secured on its outer square end K2. On the outside of the frame G, on the shaft I, and capable of being turned upon the latter, is an L.shaped bearing-piece, L, through the horizontal portion L1 of which a shaft, M, passes, which shaft also passes through a beveled cog-wheel, L2, above the portion L1 of the bearing-piece L, the wheel L2 gearing with anotherbeveled cog-Wheel, L, keyed on the shaft I outside of the bearing-piece L. The cog-wheel L2 is formed on a sleeve, M1, which passes through the extension L1, and on the under side of the latter extends into a collar, M2, so that when the shaft M is keyed at its upper end to the cogwheel L2 the rotation of the shaft will also rotate the sleeve and the cog-wheel in the extension L1, but the removal of the sha-ft will leave the cog-wheel and sleeve securely held in the extension. From the lower end of the piece L extends outwardly a pin, L1, which has a free movement in a slot, L5, in a segmental piece, L, secured to the outside of the frame Gr, the slot L5 forming the periphery of a circle of which the shaft I forms the center. By these means the piece L may be set at any angle toward avertical line, a nut, L1, holding the pinl L4 at any desired point ofthe piece L6. On the inside of the cog-wheel I3 an eccentric disk, N, is keyed, around which eccentric disk `a band or sleeve, N1, slides freely, from which sleeve an arm, N2, extendsv downwardly, -its lower end being connected by a pin to the horizontal arm of an L lshaped piece, N4, which is pivoted at its angle to the frame G. The arms N1 and N 2 are both provided with several holes to vary their points of attachment to the eccentric rod N2 and the arm T. The lowerend of the shaft M passesrthlrongh the horizontal extension O1 of a lower L-shaped bearing-piece, O, which encircles a circular shoulder, P1, formed on the side face of the slide E, and carries at the under side of this extension 01 a cog-wheel, O2, gearing with the cog-wheel P. This cog-wheel O2 is secured on av sleeve, O3, Fig. l, which sleeve passes through the eXtension'O1 and forms a collar, O1, on its upper side, beingsecured in the extension O1 in the same y manner as thecogwheel L2 in its extension L1. The sleeve P2,

Figs. 2.a and 4, ofthe cog-wheel P extends inwardly intokon'e ofthe slides' E; and between the outer end of the latter and the cog-wheel P the piece O moves freely around theshoulder P1, unless secured in'any desired position bya set-screw, O5, Fig. 3. From the slides E standards Q extend-upwardly, between which a square bar,It, is pivoted, the ends of this bar revolving in suitable bearings in these standards. At the end of the bar R 'nearest that side of the machine on which the shaft M is located, andV just inside of the standard Q, a ratchet-Wheel, R', is secured, and between it and the'standard Q an arm, S, revolves freely around the bar R, which latter at that pointY slips over the teeth without operating thel Thiswheel when the arml S is lowered. arm is connected by a bar, T, Figs. 2 and 3, or in any other suitable manner, to the up; per end of the L-shaped piecev N4; -and as the latter is operated from the eccentric disk- N through the arm N2 each revolution of the' shaft I will once operate the arm S forward and backward or up and down, and therefore also revolve the bar It a certain distance, and this distance can be regulated by the raising, more or less, of the arm S, which is effected by means of adjusting the arm N2 in the various holes of the arm N3, and the bar T in the holes of the arm N4 of the I -shaped piece. Through the standards Q are made openings, through which the lower ends of connectingrods Ql pass, they being held in place by means of pins passing through them. The upper ends of these rods Q are pivoted in the end pieces of the frame G, and each end of the fra-me. is provided with two such rods in orderthat either end of the frame may be coupled to the standards Q at pleasure. On the bar It freely slides a cog-wheehU. which gears with a cog-wheel, V, formed on the outside and on the inner end of a sleeve, W. hollow tube F, and is provided on the inside,

directly under the cog-wheel V, with a screw thread, by means of which it is screwed over the inner end of a sleeve, a., which screws upon the tube F from the opposite direction to the sleeve W. This sleeve a is provided with a shoulder, b, between `which andV the inner end of the sleeve W a guide, o, turns loosely over the sleeve a, its upper end d encircling the bar R and allowing the same to turn within it. On the inside of this sleeve lV is formed a recess, e, Fig. 4, in which a ring, f, encircling and freely sliding over the tube F, has free play.

This ring f has two inward projeetions,g, which pass through the longitudinal openings F at the top and bottom of the tube F and extend into a sleeve, h, Fig. 7, surrounding the hollow bit-stock t', and made to slide over the same` freely, both the upper and lower projections g bearing against the shoulder j on the sleeve. At the upper part of this sleeve it is provided on its inside with a recess, Z, in which ay pawl, k, Fig. 5, has its bearings, which pawlis free to move up and down in the slot or recess l in the sleeve h, Fig. 7, the pivoted'end of. the pawl being provided with two projections, m, Fig. 5, which have their bearings in depressions n at one end of the sleeve h, Fig. 7, while the free end of the pawl has a downward projection, o, and is forced down by means of a fiat spring, p. v This projection o seizes into corresponding Vopenings q in the hollow. bitstock i, and the pawl k has in its face a notch, 1', Figs. 4 and 5, into which any instrument may be made to seize,'bein g passed through the top This sleeve W surrounds the release it from contact with the bit-stockt' iu 4 order to allow the latter-to be moved in and out ot' the tube Ffree of any ot' the operative parts, the free-end of the pawl extending outside beyond the sleeve XV, and being at Vall times visible and accessible.

VVhe-n the machine is in position, as shown in Fig. l, and has been arranged level by means of the screw-standards H2, it is locked firmly in place by means ofjack-screws ot' peculiar form. These jack-screws consist of a main stem or standard, s, from the upper end ot which extends an arm, s1, provided with an opening, through which a screw-stem, s2, passes freely. This screw-stem is at its upper end provided with a crown or head, s3, and passes with itsV lower end through a socket, s4,`whic`n' slides up and down on the stem s in grooves 85, and is held in place by a link, s6, which, being pivoted on each side of the socket s, extends around the stem, and is supported in one of the notches 37 on the backof the stem s. The lower end of the stem s being placed against the end pieces A B of the frame, the screwsteln s2 is turned by means of a lever, which may be passed through an opening, 88, in the stem, until the head s3 bears rmly against the roof of the shaft, and until the vmachine has been firmly secured in place.

The machine being thus secured, the tube F being at one end of the same, and the frame G being connected to the standards Q by means of the rods Q at one end, a crankhandle is attached to the square end K2 ot' shaft K, and the latter revolved. Motion is imparted, through cog-wheels K1 and 13, beveled cog-wheel L3, L?, shaft M, and beveled cog-wheel O2, to the beveled cog-wheel P, to which the bit-stock t' is keyed, as shown in Fig. l, 4without preventing its cndwise movement, and the bit-stock, which has been provided with a suitable bit, is revolved, thereby boring the bit into the coal. The iiy-wheel J assists in keeping up the motion and renders it even. Every time the shaf'tI is revolved the eccentric disk N, through its sleeve N1, arm N2, L-shaped piece N3 N4, and bar T, operates the arm S, and its pawl S revolves the toothed wheel It', and with it the bar R, the same motion being transmitted, through the gear-wheels U V, to the sleeve W, and as, by a series ot' revolutions of the shaft I, this sleeve iV is moved along by screwing over the tube F, the inner end of the sleeve a, screwed to` and revolving with the sleeve W, pushesthe ring j' in the same direction, and as this ring, by means of its projections g, in a similar manner pushes the sleeve h, which,

`'through the pawl Z', is connected to and revolves with the bit-stock t', the latter is gradually but surely and evenly forced into the coal as the bit bores it out and is operated by the machine. The guide c moves the small gear-wheel U on the bar R along with the same speed and at the same moment the gearwheel V on the sleeve W is moved, for the guide c is firmly held to the sleeve W by the shoulder b on the sleeved. Supposing it to be desired to bore a hole of tive feet in depth, and the bit-stock i be only two and a half feet long, (for the machine must be limited-in its dimensions to certain sizes, as the shafts are seldom over a certain width 5) and supposing, further, that the sleeve W, with all the parts attached, has reached the furthest end of the tube F, and cannotbe screwed any further; an instrument is inserted, through the top opening F of the tube F, into the recess r ot' the pawl la, and theprojection o of the latter raised out of the slot q in the bit-stock i, separating the latter from the sleeve and its parts; the sleeve W is unscrewed from the sleeve a, the latter rapidly revolved around the tube F until it again reaches the opposite end of the tube; the guide c, ring j', and Vsleeve YV pushed toward the sleeve a the cog-wheel U pushed to the corresponding end ot the bar R, and the parts screwed together again, taking care to allow the projection o of the pawl k to drop into one of the slots q in the rear end ot' the bit-stock t', which latter has not been moved back in the tube F; and the boring operation can be continued without trouble until the required depth ot hole has been reached. It at that point the sleeve W has not yet reached the endof the tubev F, the pawl k need merely be raised and the hollow-bit stock t' moved back through tube F outI of the hole it has bored. i

As the object et' my machine is to make a continuous horizontal opening in the side of a wall ot' coal near the bottom oi' the shaft with a great saving in the waste of coa-l, which is unavoidable lin the use of the pickby hand, the machine must, after one hole yhas been bored, be moved so as to bore another hole without leaving a wall or partitionV of coal between the two openings. This requires a very accurate resetting and releveling of the machine after the same has been moved,and oecupies much time and labor. To obviate this, a-nd to accomplish the arrangement of the bit for the next hole with accuracy and in the shortest space of time possible, VI have arranged the frame G so asr to be connected to or disconnected from lthe'tube F and slides E at pleasure, in order that the latter parts may slide from one end of the machine to the other, independent of their relative. posit-ion with the frame G above them. rIhe bit-stock and bit having been removed out of the hole just iinished4 by the means above described,the frame G, drawing (orpushing, as the case may be) the slides E, and with them Aall the operative parts, is moved along in its ways G1, through the operation of the cog-wheel G on frame G, gearing rwith the rack C2, the frame G moving the slides E in 4their ways by means of the connecting-bars Q 5 and in order to attain this perfectaccuracy in .moving these parts `for the-proper distance only, ll divide the inner face of that bar C nearest the wall to ybe bored, or being bored, by in ches and feet,

` as shown in Fig. l, so that, knowing the ex- 4act diameter of the bit and of the hole bored,

I can set the lnachine to a hair-line by this scale on the face of the bar G, and thus insure aconsecutive boring without leaving walls between any two holes bored. In this manner hole after hole is rapidly bored until the frame G has reached the end B of the lower frame, at which point the tube F has only reached one-half of the distance. Instead of being obliged to move the entire machine and to return the tube F and frame G toward the end A ofthe machine in order to continue the work, I disconnect the shaft M, which is easily accomplished by merely removing the keys which secure it to. cog-wheel L2 and the sleeve 0 3, and also disconnect the rods Q from the standards Q, turning them upwardly to allow them to pass over the standards, move the frame Gto the opposite end A of the lower frame, and connect the rods Q on its other end to the standards Q. I then loosen the setscrew O5, Fig. 3, and turn the piece O on the shoulder P ofthe slide E to the opposite side,

-and by loosening the set-screw L7 reverse the piece L in the same manner, until the gearwheels L2 and O2 are inline again. The shaft M is then passed through these gear-wheels and secured by its pins, the set-screws O5 and L", after the several parts have been arranged, tightened, and the work can continue as before. In this way, by disconnecting the frame G, shifting it over the tube F, and reconnecting it to the same at-the other end, I save the trouble oi' moving the entire machine, and this is especially accomplished by the arrangement of the gear-wheels L2 and 02 on the swinging pieces L and O, whereby the gearwheels are always kept in gear with their large main gear-wheels L3 and I).

I can use my machine for boring holes in a coal-mine in avertical line as well as in a horizontal one. For that purpose the wheels H1 and their bars II and screw-stems H2 are dispensed with 5 and as in moving the fra-me G up or down the gearwheel G and rack O2 would afford no security, T provide other means for that purpose when using my machine vertically. From the end piecesAB extend from that side of the machine on which the shaft Mis located arms t, in which the ends of a screw rod or bar u have their bearings, in which the bar u revolves freely. rlhis bar passes through a nut, c, so arranged on the inner end of the frame G as nearly central as possible, as to be easily attached to or removed from said frame. side of the arms t are provided with square ends, so that by attaching a crank-handle and revolving the same the frame G may be moved up or down on the bar u. In this case I provide bands or clamps of any suitable construction to keep the frame G lirmly to the bars C ofthe lower frame. When the machine is used rEhe ends ot' the bar u outhorizontally, as shown in the drawing, it will be understood that the lower frame may be fastened to the floor in any suitable manner, in addition to the jack-screws s to hold the machine rmly down in position'.

My boring-machine is very simple in construction, andoccupies but little space, but its construction renders it very effective. Il" it is desired to bore holes of greater depth than the length of the bit-stock t' will allow, an extension, 1,Ksee Fig. 2,) may be placed into its rear end. This extension t1 may be made of wood or metal, and solid, and is provided with a groove in order to be keyed to the sleeve PZ of cog-wheel I?, like the hollow bit-stock c', so as to revolve with the cog-wheel, yet retaining a free longitudinal movement, and with notches i2 to receive the projection 0 of the pawl 7c, and a couple of holes, t3, in its stem 'i4 to attach it by means of a pin to the bit-stock; and several such extensions il may be placed one upon the other until the required depth is reached 5 and in retractingv the bit-stock it is merely necessary to remove each extension as it passes out back from the tube F. The tube F and bitstock t' being hollow, they can be easily cleaned from any dust or particles of coal settling in them, and the bit-stock may be run back from time to time for this purpose, and the operative parts of that portion of my machine, therefore, are not liable to get out of order.

Having described my invention, I claiml. The combination and'arrangenient of the movable frame G andthe gearing which it carries, and by which the bit-stock t' is operated, with the feeding-tube F, which carries the bit-stock, and serves to connect the latter with the said frame, the bit-stock tube F and frame G sliding in the same direction in different planes upon the main frame A B, when these several parts are constructed and arranged to operate essentially as described.

2. rlhe arrangement ofthe frame G relatively to the slides E E, to which it is connected, and the bit-stock-carrying parts, whereby the latter may be moved from one end to the other of the frame A B to continue in the same line of cuts, essentially as described.

3. The screw-standards H2 H2 arranged upon the axles H, into which they are swiveled, and connected to the main frame A B by the screw-lugs A B as a means for raising and lowering the frame, as described.

4. The hinged or swinging connecting-rods Q of the moving frame G, arranged as and for the purpose described.

5. The swinging L- shaped pieces L and O, the former on the frame G and the latter on one of the slides E, both carrying gear-wheels, and both adjustable in different positions, by means of which the relative position of the frame G towardthe slides E may be changed without changing the gearing by removal, essentially as described.

6. Ihe slides E provided with standards Q,

and connected to each other by means of atube, F, provided witha screwthread on its outer surface, and with longitudinal openings F1 at top and bottom, and serving to carry .the hollow bit-stock t', essentially as described.

7. The device for feeding the bit-stock toward the coal, consisting of the sleeves W and a, inner sleeve h, ring f with its .projections g, and pawl k, all operated and operating essentially as described.

8. Thecombination,withthehollowbit-stock Ii provided with slots q, of the sleeve h provided with a slot, l, shoulder j, and depressions n, and a pawl having projectionsm and o, essentially as described.

9. The pawl k provided with a notch, 1*, by which to raise the pawl and disconnect Jthe bitstock t' from the tube F without removing` the sleeves W a or any ofthe other parts, essentially as described.

10. The swinging L- shaped piece L having a pin, L, in combination with the segmental slotted piece L6 secured to the frame G, and operating in connection with a nut, L", to clamp the piece L when the reversible shaft M is changed, as described.

1K1. The beveled gearwheels L2 and O2, se cured to the extensions Ll and Ol of swinging pieces L and() by means of sleeves M1 and O3 and collars M2 and 04, to allow the shaft M to be removed for the reversal of the gearing, es-

Witnesses:

EDWARD STEELE, ISAAC T. FREEsE. 

